Freshwater Fish

Eocene. Green River has been noted for its well-preserved fish since mid-way through the 19th century. The unusually excellent preservation of the Green River fish fossils is usually attributed to a combination of two factors: 1) a cold period during the Eocene that would have caused dead fish to sink faster due to a less inflated swim bladder; and 2) the great depth of the lakes and the consequent anoxic conditions that would have often prevented scavengers from disturbing the carcasses.
Abstract/Description: Eocene. Green River has been noted for its well-preserved fish since mid-way through the 19th century. The unusually excellent preservation of the Green River fish fossils is usually attributed to a combination of two factors: 1) a cold period during the Eocene that would have caused dead fish to sink faster due to a less inflated swim bladder; and 2) the great depth of the lakes and the consequent anoxic conditions that would have often prevented scavengers from disturbing the carcasses.
Subject(s): Southern Illinois, United States
environmental sciences
Title: Freshwater Fish.
Type of Resource: still image
Genre: natural object
Physical Form: image/jpeg
Abstract/Description: Eocene. Green River has been noted for its well-preserved fish since mid-way through the 19th century. The unusually excellent preservation of the Green River fish fossils is usually attributed to a combination of two factors: 1) a cold period during the Eocene that would have caused dead fish to sink faster due to a less inflated swim bladder; and 2) the great depth of the lakes and the consequent anoxic conditions that would have often prevented scavengers from disturbing the carcasses.
Identifier(s): rockminx-8-2-3 (IID)
Subject(s): Southern Illinois, United States
environmental sciences
Held by: The University of Toledo
Location: Digital Initiatives, University of Toledo Libraries
Rights Statement: NO COPYRIGHT - UNITED STATES
Related Title: UT Department of Environmental Sciences.
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